PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 10092521-1 1999 The large subunit of cytochrome b558, gp91-phox, is believed to play a key role in superoxide generation in neutrophils by accepting electrons from NADPH and donating them to molecular oxygen. NADP 148-153 mitochondrially encoded cytochrome b Homo sapiens 21-33